The basis of this circuit is the HA2400 released at the time. The circuit is from a Radio Electronics magazine from March 1980. The power supply must be symmetrical at 15 V.
We found this circuit in the March 1994 issue of Electronics Now magazine. The transistor is...
This circuit with two transistors was found in ancient European documentation. Transistors support...
Found in American documentation from the 1980s, this circuit makes use of components of the time,...